An intelligent switch state comprehensive online monitoring and fault diagnosis device

Abstract

The invention discloses an intelligent switch state integrated online monitoring and fault diagnosis apparatus. The apparatus comprises a mechanical property state monitoring unit, an SF6 gas state monitoring unit, a lightning arrester state monitoring unit, a partial discharge state monitoring unit and an information management unit. The monitoring units and each monitoring unit and the information management unit carry out communication and data interaction through a CAN and Ethernet inside an apparatus by use of a plug-in mode. The apparatus provided by the invention can perform omni directional real-time integrated online monitoring on a mechanical property state, an SF6 gas state, a lightning arrester state and a partial discharge state of a switch body. According to parameter information of a switch state, a fusion decision analysis is made on the state of a switch by use of a fault diagnosis and data fusion technology, and a decision conclusion is obtained. The apparatus provided by the invention can communicate with a station control layer background monitoring system through an IEC61850 protocol, upload data and a diagnosis result to the background monitoring system and generate a diagnosis log and alarm signals.

Description

Technical field [0001] The invention belongs to the technical field of power device monitoring, and relates to an intelligent switch state comprehensive online monitoring and fault diagnosis device, and is particularly suitable for intelligent substations designed according to the IEC61850 standard, and the three-phase linkage or three-phase split switch state of intelligent substations of 10KV and above Integrated online monitoring and fault diagnosis. Background technique [0002] In recent years, with the development of new energy sources such as photovoltaics and wind power, the State Grid has also vigorously promoted the construction of smart grids to meet the needs of new energy grids. As an important part of the smart grid, high-voltage switches are mainly used for electrical equipment that plays the role of on-off, control or protection in the power generation, transmission, distribution, power conversion and consumption of the power system. The stability of its operation...

AI Technical Summary

Problems solved by technology

[0004] At present, there are many types of switch online monitoring devices on the market, but most of them have relatively single functions, that is, one device can only monitor one state of the switch

If the all-round monitoring of each state of the switch body requires the cooperation of multiple devices, not only the configuration is complicated, the cost is high, and the engineering implementation is difficult, but it also takes up a lot of space in the outdoor cabinet of the switch

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